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The Servo Browser Engine
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Oriol Brufau f593b6d426
Protect create_spanned_slot_based_on_cell_above() against arithmetic underflow (#35437) 
`Table::create_spanned_slot_based_on_cell_above()` was performing the
subtraction `self.slots.len() - 2`, which could theoretically result
in underflow if `self.slots.len()` is 0 or 1.

That shouldn't have been possible in practice, but it may be worth
addressing, to improve code robustness. So this patch:
  - Switches to `self.current_y()?.checked_sub(1)?`, which is safe and
    is easier to understand.
  - Moves `create_spanned_slot_based_on_cell_above()` to `TableBuilder`,
    since `current_y()` is there, and the method is only used when
    building the table anyways.
  - Ensures that both callers use `expect()` to assert that the method
    returned a value.

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
2025-02-12 20:11:11 +00:00
.cargo Move various reflector types and traits to script_bindings (#35279) 2025-02-04 06:58:08 +00:00
.github ci: Free some disc space on GitHub hosted runners (#35181) 2025-02-04 06:55:13 +00:00
.vscode
components Protect create_spanned_slot_based_on_cell_above() against arithmetic underflow (#35437) 2025-02-12 20:11:11 +00:00
docs Update in-tree docs to point to the new book (#32743) 2024-07-09 15:42:00 +00:00
etc feat: Track the binary size for all the different platforms (#34744) 2025-01-20 09:41:23 +00:00
ports/servoshell libservo: Expose a single InputEvent type and pass it to script (#35430) 2025-02-12 17:07:15 +00:00
python change terminal wrapper library from blessing to blessed to support running mach test-wpt on windows. (#35327) 2025-02-06 16:45:34 +00:00
resources Implement overflow:clip (#35103) 2025-02-12 07:02:06 +00:00
support libservo: Don't bounce ready-to-present frame notifications to the Constellation (#35369) 2025-02-12 08:25:58 +00:00
tests Run WPT notifications tests. (#35442) 2025-02-12 19:04:09 +00:00
third_party Use patch to add arrayType in WebIDL.py (#34848) 2025-01-06 20:29:36 +00:00
.clang-format
.flake8 Improve formatting of Python files (#30919) 2023-12-24 23:58:37 +00:00
.gitattributes openharmony: add servoshell for ohos (#33295) 2024-09-20 08:20:27 +00:00
.gitignore mach: fix logic to override paths for legacy layout (#34467) 2024-12-04 12:38:58 +00:00
.mailmap
.python-version Set python version to 3.11 (#34707) 2024-12-19 18:42:36 +00:00
Cargo.lock build(deps): bump miniz_oxide from 0.8.3 to 0.8.4 (#35439) 2025-02-12 17:29:41 +00:00
Cargo.toml Revert "Use surfman with glow bindings (#34328)" (#35402) 2025-02-10 17:20:27 +00:00
CLOBBER
CODE_OF_CONDUCT.md Clarify the Code of Conduct (closes servo/servo.org#164) (#32835) 2024-07-23 09:12:03 +00:00
CONTRIBUTING.md Update in-tree docs to point to the new book (#32743) 2024-07-09 15:42:00 +00:00
deny.toml deps: Upgrade to webrender@0.66 (#35325) 2025-02-07 11:57:26 +00:00
Info.plist
LICENSE
mach mach: adopt uv and avoid system python (#34632) 2024-12-16 09:20:37 +00:00
mach.bat mach: adopt uv and avoid system python (#34632) 2024-12-16 09:20:37 +00:00
PULL_REQUEST_TEMPLATE.md
README.md mach: adopt uv and avoid system python (#34632) 2024-12-16 09:20:37 +00:00
rust-toolchain.toml Install rust-src in rust-toolchain.toml (#35117) 2025-01-22 05:46:15 +00:00
rustfmt.toml mach: Do not use unstable rust for rustfmt (#31441) 2024-02-28 13:53:04 +00:00
SECURITY.md Update new issue URL in SECURITY.md (#31698) 2024-03-15 15:03:49 +00:00
servo-tidy.toml Finish the integration of webxr into the Cargo workspace (#35229) 2025-01-31 16:41:57 +00:00
servobuild.example Add medium profile for daily work scenario (#34035) 2024-11-21 11:28:15 +00:00
shell.nix Add minimal libservo example using winit (#35118) 2025-01-23 12:15:53 +00:00
taplo.toml

README.md

The Servo Parallel Browser Engine Project

Servo is a prototype web browser engine written in the Rust language. It is currently developed on 64-bit macOS, 64-bit Linux, 64-bit Windows, 64-bit OpenHarmony, and Android.

Servo welcomes contribution from everyone. Check out The Servo Book to get started, or go to servo.org for news and guides.

Getting started

For more detailed build instructions, see the Servo book under Setting up your environment, Building Servo, Building for Android and Building for OpenHarmony.

macOS

  • Download and install Xcode and brew.
  • Install uv: curl -LsSf https://astral.sh/uv/install.sh | sh
  • Install rustup: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
  • Restart your shell to make sure cargo is available
  • Install the other dependencies: ./mach bootstrap
  • Build servoshell: ./mach build

Linux

  • Install curl:
    • Arch: sudo pacman -S --needed curl
    • Debian, Ubuntu: sudo apt install curl
    • Fedora: sudo dnf install curl
    • Gentoo: sudo emerge net-misc/curl
  • Install uv: curl -LsSf https://astral.sh/uv/install.sh | sh
  • Install rustup: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
  • Restart your shell to make sure cargo is available
  • Install the other dependencies: ./mach bootstrap
  • Build servoshell: ./mach build

Windows

  • Download uv, choco, and rustup
    • Be sure to select Quick install via the Visual Studio Community installer
  • In the Visual Studio Installer, ensure the following components are installed:
    • Windows 10 SDK (10.0.19041.0) (Microsoft.VisualStudio.Component.Windows10SDK.19041)
    • MSVC v143 - VS 2022 C++ x64/x86 build tools (Latest) (Microsoft.VisualStudio.Component.VC.Tools.x86.x64)
    • C++ ATL for latest v143 build tools (x86 & x64) (Microsoft.VisualStudio.Component.VC.ATL)
    • C++ MFC for latest v143 build tools (x86 & x64) (Microsoft.VisualStudio.Component.VC.ATLMFC)
  • Restart your shell to make sure cargo is available
  • Install the other dependencies: .\mach bootstrap
  • Build servoshell: .\mach build

Android

  • Ensure that the following environment variables are set:
    • ANDROID_SDK_ROOT
    • ANDROID_NDK_ROOT: $ANDROID_SDK_ROOT/ndk/26.2.11394342/ ANDROID_SDK_ROOT can be any directory (such as ~/android-sdk). All of the Android build dependencies will be installed there.
  • Install the latest version of the Android command-line tools to $ANDROID_SDK_ROOT/cmdline-tools/latest.
  • Run the following command to install the necessary components: 
    sudo $ANDROID_SDK_ROOT/cmdline-tools/latest/bin/sdkmanager --install \
 "build-tools;34.0.0" \
 "emulator" \
 "ndk;26.2.11394342" \
 "platform-tools" \
 "platforms;android-33" \
 "system-images;android-33;google_apis;x86_64"
  • Follow the instructions above for the platform you are building on

OpenHarmony

  • Follow the instructions above for the platform you are building on to prepare the environment.
  • Depending on the target distribution (e.g. HarmonyOS NEXT vs pure OpenHarmony) the build configuration will differ slightly.
  • Ensure that the following environment variables are set
    • DEVECO_SDK_HOME (Required when targeting HarmonyOS NEXT)
    • OHOS_BASE_SDK_HOME (Required when targeting OpenHarmony)
    • OHOS_SDK_NATIVE (e.g. ${DEVECO_SDK_HOME}/default/openharmony/native or ${OHOS_BASE_SDK_HOME}/${API_VERSION}/native)
    • SERVO_OHOS_SIGNING_CONFIG: Path to json file containing a valid signing configuration for the demo app.
  • Review the detailed instructions at Building for OpenHarmony.
  • The target distribution can be modified by passing --flavor=<default|harmonyos> to `mach <build|package|install>.